void
SkinMeme::set_offset(double h)
{
_h = h;
assert(bbase());
bbase()->invalidate();
}
CWpt&
SkinMeme::compute_update()
{
static bool debug = ::debug || Config::get_var_bool("DEBUG_SKIN_UPDATE",false);
// compute 3D vertex location WRT track simplex
if (_is_sticky) {
// this meme is supposed to follow the skeleton surface
if (is_tracking()) {
// it actually is following it
return _update = skin_loc(track_simplex(), _bc, _h);
}
// supposed to follow, but has no track point: do nothing
return _update = loc();
}
// this meme is not following the skeleton surface;
// it computes its location via smooth subdivision.
// but it may still track the closest point on the skeleton
// surface to avoid penetrating inside the skeleton surface.
if (vert()->parent() == 0)
_update = loc();
else
_update = vert()->detail_loc_from_parent();
track_to_target(_update);
if (_non_penetrate && is_tracking()) {
Wvec d = penetration_correction(_update, track_simplex(), _bc, _stay_out);
if (debug && !d.is_null())
err_msg("SkinMeme::compute_update: correcting penetration, level %d",
bbase()->subdiv_level());
_update += d;
}
return _update;
}
Bpoint* point() const { return (Bpoint*) bbase(); }
